Title |
Suppressing Nitrite-oxidizing Bacteria Growth to Achieve Nitrogen Removal from Domestic Wastewater via Anammox Using Intermittent Aeration with Low Dissolved Oxygen
|
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Published in |
Scientific Reports, September 2015
|
DOI | 10.1038/srep13048 |
Pubmed ID | |
Authors |
Bin Ma, Peng Bao, Yan Wei, Guibing Zhu, Zhiguo Yuan, Yongzhen Peng |
Abstract |
Achieving nitrogen removal from domestic wastewater using anaerobic ammonium oxidation (anammox) has the potential to make wastewater treatment energy-neutral or even energy-positive. The challenge is to suppress the growth of nitrite-oxidizing bacteria (NOB). This study presents a promising method based on intermittent aeration with low dissolved oxygen to limit NOB growth, thereby providing an advantage to anammox bacteria to form a partnership with the ammonium-oxidizing bacteria (AOB). The results showed that NOB was successfully suppressed using that method, with the relative abundance of NOB maintained between 2.0-2.6%, based on Fluorescent in-situ Hybridization. Nitrogen could be effectively removed from domestic wastewater with anammox at a temperature above 20 °C, with an effluent total nitrogen (TN) concentration of 6.6 ± 2.7 mg/L, while the influent TN and soluble chemical oxygen demand were 62.6 ± 3.1 mg/L and 88.0 ± 8.1 mg/L, respectively. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Netherlands | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Scientists | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Germany | 2 | <1% |
Canada | 1 | <1% |
Spain | 1 | <1% |
United States | 1 | <1% |
Poland | 1 | <1% |
Unknown | 221 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 42 | 19% |
Student > Master | 41 | 18% |
Researcher | 27 | 12% |
Student > Bachelor | 18 | 8% |
Student > Doctoral Student | 10 | 4% |
Other | 25 | 11% |
Unknown | 64 | 28% |
Readers by discipline | Count | As % |
---|---|---|
Environmental Science | 54 | 24% |
Engineering | 48 | 21% |
Agricultural and Biological Sciences | 20 | 9% |
Chemical Engineering | 9 | 4% |
Biochemistry, Genetics and Molecular Biology | 5 | 2% |
Other | 6 | 3% |
Unknown | 85 | 37% |